diff --git a/src/traces/parcoords/parcoords.js b/src/traces/parcoords/parcoords.js
index 2c0144ade6a..d680de1a370 100644
--- a/src/traces/parcoords/parcoords.js
+++ b/src/traces/parcoords/parcoords.js
@@ -292,7 +292,6 @@ function viewModel(state, callbacks, model) {
             }
         } else tickvals = undefined;
 
-        truncatedValues = helpers.convertTypedArray(truncatedValues);
         truncatedValues = helpers.convertTypedArray(truncatedValues);
 
         return {